Gas-phase molecular absorption spectrometer

Abstract

The invention discloses a gas-phase molecular absorption spectrometer, comprising a touch screen, a terminal module, an instrument container, sealing rings, an elastic screen protection plate and a terminal box, wherein the touch screen is electrically connected with the terminal module; the instrument container is a hollow box which is provided with an opening matching with the touch screen in shape and size; the terminal module is mounted in the terminal box and located in the instrument container; the touch screen is fixed at the opening via the sealing rings; the elastic screen protectionplate fits with the side, back on to the instrument container, of the touch screen via the sealing rings; the terminal box fits with the side, facing the instrument container, of the touch screen viathe sealing rings; and the terminal box, the elastic screen protection plate and the seal rings form a sealed structure and seals the opening together. The gas-phase molecular absorption spectrometerprovided by the invention is simple in structure and easy to produce, and can effectively protect a control interface and the touch screen from erosion by components like dust, acid-alkaline mist andsalt-containing steam; and the gas-phase molecular absorption spectrometer is improved in service life and work precision and reduced in maintenance cost.

Description

technical field [0001] The invention relates to the technical field of optical analysis instruments, in particular to a gas phase molecular absorption spectrometer. Background technique [0002] The theoretical research work of gas phase molecular absorption spectroscopy began in the 1970s. It is a measurement method that uses the gas molecules in the ground state to absorb specific ultraviolet spectra. Using the molecular vibration absorption principle of gas, the gas concentration and absorbance show a certain linear relationship. : When the speed of light with light intensity I0 passes through the gas with the concentration of C in the measured sample, the light intensity is weakened to I, which follows the Lambert-Beer law. First, through a chemical reaction, the ions or molecules in the aqueous solution are converted into a certain gas. Gas molecules are usually in a relatively stable state without external influences, which are called ground state gas molecules. Bu...

AI Technical Summary

Problems solved by technology

The problem with the existing gas-phase molecular absorption spectrometer is that the various chemical components rich in the air in its working environment easily affect its control interface and external terminal components, resulting in corrosion damage to the control interface and increasing the use cost of the equipment , reducing the service life of the equipment

Especially for gas-phase molecular absorption spectrometers with touch screens, the exposed touch screens will be eroded by dust, acid-base mist, salty water vapor and other components in the experimental environment, resulting in decreased sensitivity, blurred display, and difficulty in cleaning.

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